Overestimation of diastolic blood pressure in the elderly. Magnitude of the problem and a potential solution

Insights

Indirect blood pressure measurement may overestimate readings in elderly patients. An automatic blood pressure recorder provided a more accurate, noninvasive measure of diastolic blood pressure (DBP) compared to traditional methods.

Area of Science:

  • Cardiology
  • Geriatrics
  • Biomedical Engineering

Background:

  • Indirect sphygmomanometry is standard for hypertension but can overestimate blood pressure in the elderly.
  • Overestimation may lead to unnecessary or excessive hypertension treatment in older adults.

Purpose of the Study:

  • To assess the degree of diastolic blood pressure (DBP) overestimation by indirect methods in elderly hypertensive men.
  • To evaluate an automatic blood pressure recorder as a more accurate noninvasive alternative.

Main Methods:

  • Compared direct intraarterial DBP with indirect measurements from a mercury sphygmomanometer and an automatic recorder.
  • Study included 36 elderly men (≥60 years) with hypertension.

Main Results:

  • The mercury sphygmomanometer overestimated elevated DBP frequency nearly threefold compared to intraarterial measurements (39% vs. 14%).
  • The automatic recorder showed closer agreement with intraarterial DBP, with fewer patients exceeding 90 mmHg (19% vs. 14%).
  • Significant differences in overestimation were noted between the mercury sphygmomanometer and automatic recorder versus intraarterial DBP (P < 0.05).

Conclusions:

  • Traditional indirect sphygmomanometry frequently overestimates DBP in elderly hypertensive patients.
  • Automatic blood pressure recorders offer a more accurate and reliable noninvasive method for DBP measurement in this population.

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